wilwood midilite brakes spongy

mc_hawkings24

Posts : 409Join date : 2015-08-09

Still having problems bleeding these brakes. Have bled them many times now and have changed the master cylinder aswell.I have crisscross bled the brakes and have tried with the engine running and it's made no difference. I've just now tried with all wheels off and getting the abs to cut in then bleed but that made no difference either. I'm also getting alot of air coming out of the calipers when bleeding and when you think thats it no more air you run the engine then rebleed and get a load of air out of the calipers again.

I still have the original nissan calipers so i was going to try them out and if there fine then it's a caliper problem unless anyone has any suggestions?

Gtirchris

Posts : 200Join date : 2013-09-23Age : 38

As toaster said, bleed inner, then outer, then inner again, if they're still spongy, take it for a drive, and on a quiet road with nothing behind you brake hard so the abs activates a few times, then go back and rebleed the brakes, only reason I suggest this is that I had an issue with a BMW at work after fitting a new abs module, turns out it's quite common, air 'sticks' to the inside of the pipes and activating the abs shifts the air down the pipe, give it a try fella, hope that helps.

mc_hawkings24

Posts : 409Join date : 2015-08-09

Can't see it being rear calipers as they worked before i changed the fronts to wilwoods. I have tried inner and outer but no luck. What i'm going to try now is put the original calipers back on with pads but need hoses i bloody binned them. If i get a hard pedal then it's calipers.

Mr B

Odd one !Not biggest fan of wilwood but your issue bit odd, either caliper flexing or it getting constant air pocket for some reason ! I would try get refund but if that no go an exchange of calipers would be good, reviewing brake lines maybe good too .about best 3 options for brakes at sensible cost is akebono 2 pots on outlander brackets & 294mm galant discs, mix that with carbotech pads front and rear and they are evil & affordable.Hi-Spec 4pots not bad, even better if find nice priced decent used set .k-sport 6pots (copy of AP 6pot caliper) are good & priced nice in asia .Hope get resolved one way or other ...

mc_hawkings24

Posts : 409Join date : 2015-08-09

Here are some pics

I'm not using any copper washers only the union in the picAnd then the brake line screwed onto it.I have noted the caliper flex which isn't much but this is not flex it's a ton of air that won't draw out.I changed the top nipples for one piece instead of the usual two piece the other week but that made no difference just abit easier.

Mr B

You could try a little bit of liquid thread seal on fitting thread to caliper & also remove caliper from bracket, fit bock of wood between pads to save accidental mess & hang it as high as possible to promote air removal via nipples.I have heard some hang it high & angled so bleeding from what would be bottom nipples when mounted .Is quite a bit of flex in those calipers, few people complain on bleeding air issue :-S Pain in the butt.Pedal can appear softer due to hydraulic ratio change of different piston size meaning more travel & increased foot force needed but your 25.4mm bigger master cylinder should of helped balance that & springy pedal certainly seems like air !

mc_hawkings24

Posts : 409Join date : 2015-08-09

This is a message relayed to the seller from rallydesign

"I can not say what is happening with your customers kit, We have sold around 50-60 kit for the Nissan with not issues what’s so ever and the Midilite calipers we have sold 1000’s without these type of issues. If you want to have it back to us we can take a look and plumb them to see if they bleed up."

So if you like we could get you to send calipers back for testing, but they are not expecting there to be an issue.

I replied to the seller saying rallydesign should google there product as there's a ton of people having issues with there calipers.